Ear muff



FIG. 1 is a front elevational view of an ear muff showing my new design;

FIG. 2 is a right side elevational view thereof, the left side being a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a cross-sectional view taken along line 5--5 in FIG. 1. 

The ornamental design for an ear muff, as shown and described. 